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' (No Model.) P A WH TNEY 3 Sheets-Sheet 1.

MAOHINE FOR NOTGHING'SOALE BEAMS No. 269,762. Patented-Dec. 26, 1882.

(No Model.)

3 Sheets-Sheet 2. P. A. WHITNEY.

MACHINE FOR NOTGHING SCALE BEAMS.

No. 269,762. Patented Dec. 26. 1882.

%/?INVEN TOR WITNESSES mNEYS p v (No Model.) v a Sheets-Sheet 3.

' P. A. WHITNEY.

MACHINE FOR NOTGHING SCALE BEAMS.

No. 269,762. Patented Dec. 26,1882.

I ll llllmnL INVENTOR ATTORNEYS WITNESSES N. PETERS. Phobljlhognphl Winn-gm. m c.

. Uwrrnri STATES PATENT Orrica.

PARDON A. WHITNEY, OF CLEVELAND, OHIO, ASSIGNOR TO WILOOX, TREAD- WAY & (30., OF SAME PLACE.

MACHINE FOR NOTCHING SCALE-BEAMS.

SPECIFIC TIGN forming part of Letters Patent No. 269,762,- c1ated December 26, 1882, Application filed March 28, 1881. (No model.)

To all whom it may concern:

Be it known that I, PARDON A. WHITNEY, of Cleveland, in the county of Ouyahoga and State of Ohio, have invented certain new and 5 useful Improvements in Machines for Notching Scale-fieams; and I do hereby declare the following to be a full, clear, and exact description of the invenlion,such as will enable others skilled in the art to which it pertains to make and use it, reference being had to the accompanying drawings, which form part of this specification.

My invention relates to machines for notching scale-beams; and it consists in the peculiar construction of the same, whereby a milling-tool may be used for cutting the notches, thus rendering the iron which composes said scale-beam less liable to break out, as sometimes is the case where a chisel is used to cut the said notches.

It also consists in a peculiar feeding mechanism, whereby the notches of the scale-beam are graduated, said feed mechanism being capable of varying said graduatious.

Figure l is an isometric view of my machine, showing the graduating feed-slide and its clamping mechanism for holding the scalebeam in position. Fig. 2 is a detached view, showing the cams and mechanism for operat- 0 ing the feed and also the cam which operates to feed the milling-tool to the scale-beam. Fig. 3 is a horizontal sectional view of my machine, showing more clearly the manner of feeding the milling-tool to the scale-beam. Fig. 4 is a 5 rear elevation of the operating mechanism of my machine. Fig. 5 is an enlarged sectional view of the feed-bar. Fig. 6 is a diagram showing the result of adjusting; the feed-bar 0 up or down. 40 A is the frame of my machine, to which is securely attached the upright frame A.

B is a sliding frame, the lower end of which slides in the groove 1) and the upperend slides on the track I) on the top of the frame A.

a a are clamps for securing the scale-beam in position on the upper end of the sliding frame B. (See Fig. 3.)

O is a toothed bar, which is pivotally'secured to the upper left-hand corner of the frame B, and adapted to be adjustably secured at its other or free end in any suitable manner.

D is what I'shall call the feed-frame. One of the ends of this frame D is pivotally attached to two arms. e e, which in turn are secured tothe upright shaft E. (See Figs. 2 and 3.) The free end of the feed-frame D is provided with'a knife, (I, which .is adapted to engage with the teeth of the bar 0, as'shown in Figs. 2 and 5.

G is a flat spring, one end of which is secured to the frame A, and the other or free end being adapted to engage with the free end of the feed-frame D (see Fig. 2) and operate to keep the knife (I in contact with the teeth of the bar 0.

fis a two-armed lever, or what isknown as a bell-crank lever. This lever is pivoted to the frame A in such a position that one ofits arms will rest against the spring G and the other arm will rest on a cam-wheel, H. The arm which rests on the cam-wheel maybe provided with a means for'taking up any wearor lost motion, as shown in Fig. 2, said adjusting device consistingin this case of a set-screw,f,

passing vertically through the arm.

0 is an arm secured to and extending out from the upright shaft E. This arm 6 is provided on its free end with a friction-roller, 6 (see Figs. 2, 3, and 4,) which engages with the face-cam wheel F.

his a spiral spring, one end of which is secured to the frame A, and the other end being secured to a bar, D, which in turn is secured in the feed-frame D. This spring h 85 passes in a diagonal direction between the feed-frame D and the uprightframe A, (see Figs. 1, 2, 3, and 4,) the object of which will he explained in the description of the operation of my machine.

H is an upright frame, which is secured to the frame A in any suitable manner. 1 On the upperendof this frame H is journaled a shaft, 2'. This shaft t' is provided on one of its ends, outside of the frame H, with a pulley, t", by 5 means of which it receives rotary motion from a pulley,j, through a belt, j. (See Fig. 4..) Secured to the other end of the shaft *5, also outside of the frame H, is a gear-wheel, t. Extending between the inner sides of the frame 11 and journaled on the shafti is a sleeve, 0, which is provided with two short arms, 1' 9', which in turn support another sleeve, I, said sleeve 1 acting as a journal for a shaft. m.

n is a milling-cutter, which is secured to one end of the shaft m.

l is apinion secured to the other end of the shaft m, and adapted to mesh with the gearwheel 1".

L is a long arm, which extends downward from the sleeve 0, its lower end engaging with a cam-wheel, N. (See Figs. 2, 3, and 4.) The lower end of the arm L. 1 provide with an adjustable bearing-piece, L, which is preferably made of hardened steel. (See Figs. 2 and 3.) p is a spring, one end of which is secured to an adjustable sliding bar, S, (see Fig. 3,) and the other or free end bearing against the arm L and acting to keep said arm in contact with the cam-wheel N. By means of set-screws pressing against the rear of the bar S the tension of the spring 1) may be increased or (liminished, as desired.

It will be seen by reference to Fig. 2 that the cams F, H, and N are all secured on the shaft U, and are revolved in the direction of the arrow seen on the cam H.

The operation of my machine in detail is as follows: A scale-beam, T, (see Fig. 3,) is secured to the upper end of the sliding frame B by means of the clamps a a in such a manner as to leave the edge which is to be operated upon or notched slightly projecting. The

* adjustable feed-bar O is now adjusted up or down, as is found necessary, it being seen by reference to Fig. 6 that the nearer the bar 0 is brought to a right angle to the knifed (or to a horizontal position) the greater will be the distance horizontally between the teeth of the bar 0. The shaft U and the cams F, B, and N are now revolved, as is also the milling-tool n, by means of the pinion l, gear-wheel t shaft 1', &c., as hereinbefore mentioned. we will assume that the cam N first acts to push the lower end of the lever L outward. This in turn will act to move the milling-tool toward the beam T, (see Fig. 3,) and said milling-tool, revolving,cuts or forms a notch in the beam, the cam N being of such shape as to gradually feed the milling-tool toward and into the beam. Now, when the cam N has revolved around until its lower surface, 0, is directly opposite the lower end of the lever L, the spring 1), pressing against the said lever L, forces its lower end inward, and hence the sleeve 1, 850., and the milling-tool naredrawu back or disengaged from the beam T. 'At'ter the milling-tool a has been drawn back, as hereinbefore mentioned, the cam H is in such a position as to raise the horizontal arm of the bell-crank leverf, which rests on it, thus causing the vertical arm to engage with the flat long spring Gr and push it toward the feedframe D. j The free end of this spring G in turn operates to engage the knife d with the teeth of the bar (3. The face-cam F now comes in position to act on the free end ofethe arm 0, forcing said arm to the left, (see Fig. 2,) and hence forcing the arms 6 e and the teed-frame D, to which the said arms are pivoted, to the right. This acts, through the knife (I and bar (3, to move the sliding frame B, and the scalebeam T also, to the right and in position for the milling-tool n to again operate on the beam T. After the frame B has been moved, as hereinbefore mentioned, the cam H has traveled to such a position as to allow of the spring G forcing the vertical arm of the bell-crank leverf back, as shown in Fig. 2. This allows the spiral spring h to disengage the knife 01 from the teeth of the bar 0. After this has been done the cam F is in such a position as to allow of the arm 0 moving to the right, (see Fig. 2,) which in turn allows the spring h to pull the feed-frame D to the left, thus leaving the feeding part of the machine in position to be again operated upon by the cams F and H.

hat 1 claim is- 1. In a machine for notching scale-beams, a graduating-slide arranged to support the beam to be acted upon and carry the same longitudinally, a milling-tool arranged to be moved to and from the slide and the edge of the beam mounted thereon, and mechanism, substantially as described, for moving the slide and milling-tool with proper relation to each other, essentially as set forth.

2. in a machine for notching scale-beams, the combination, with a milling-tool,n, of the graduating-slide B, said slide being provided with an adjustable feed-bar, C, substantially as and for the purpose shown and described.

3. In a machine for notching scale-beams, the combination, with a milling-tool, a, said milling-tool being adapted to be automatically fed to the said scale-beam, of the graduating-slide B, said slide being provided with an adjustable feedbar, 0, substantially as and for the purpose shown and described.

4. Thecombination, with agraduating-slide, of the adjustable toothed feed-bar, the pivoted feed-frame provided with the knife for engaging said bar, and mechanism for swinging said feed-frame and moving it longitudinally, substantially as described, and for the purpose set forth.

5. The combination, with the graduatingslide and the milling-tool, of the single camshaft, the cams fixed thereon for commune eating motion to said slide and tool, and intermediate mechanism by which said slide and tool are actuated from the same shaft, substantially as described.

6. The combination, with the graduatingslide, devices for regulating the extent of its feed movement, and the milling-tool, of the single cam-shaft carrying three cams, and intermediate mechanism through which one of the cams transmits motion to the slide, an-

other to the feed-regulating devices, and an- In testimony whereof I havesigned my name 10 other to the milling-tool, substantially as deto this specification in'the presence of two subscribed. scribing witnesses.

7. In a machine for notching' scale-beams,

the combination, with a milling-tool adapted I PARDON A. WHITNEY.

to be automatically fed, of a graduating-slide,

said slide being provided with an adjustable Witnesses: feed-bar, substantially as and for the purposes JNO. OROWELL, Jr, shown and described. ALBERT E. LYNCH. 

